松辽盆地南部中浅层石油地质条件、资源潜力及勘探方向  

The geological conditions, resource potential,and exploration direction of oil of middle-shallow layers in the southern Songliao Basin

作　　者：邓守伟[1] 范晶[1] 王颖[1] DENG Shouwei;FAN Jing;WANG Ying(No. 1 Jinjiang Street, Songyuan,Jilin 138000,China)

机构地区：[1]中国石油天然气股份有限公司吉林油田分公司

出　　处：《海相油气地质》2019年第2期33-42,共10页Marine Origin Petroleum Geology

基　　金：中国石油集团重大专项“中国石油第四次油气资源评价”之课题“吉林探区第四次油气资源评价”(编号:2013E-0502-0302);国家科技重大专项课题“岩性地层油气藏成藏规律、关键技术及目标评价”(编号:201705001-002)联合资助

摘　　要：致密油的勘探开发,使松辽盆地南部的石油资源结构发生了较大变化,因此需要开展新一轮系统的资源评价。松辽盆地南部石油资源主要分布于中浅层,中浅层发育下部、中部和上部等3套成藏组合,常规油在3个组合中均有分布,致密油发育于下组合。对于常规油,建立了构造、构造-岩性和岩性等3种类型的刻度区,划分了13个评价单元,资源评价方法以统计法和类比法为主;对于致密油,建立了1个刻度区,按照渗透率大小划分了3个评价单元,资源评价方法采用了资源丰度分类类比法、小面元容积法。评价结果显示:松辽盆地南部中浅层石油资源量约为32.2×10^8t,其中常规油资源量为22.5×10^8t,致密油资源量为9.7×10^8t;剩余石油资源量约10×10^8t,其中,常规油为5.7×10^8t,主要分布于高台子油层和萨尔图油层,致密油为4.3×10^8t,主要分布于扶余油层。大情字井地区的高台子油层和乾安地区的扶余油层,是近期-中期勘探的重点区带。The exploration and development of tight oil has greatly changed the structure of oil resources in the southern Songliao Basin, so it is necessary to carry out systematic resource evaluation. The oil resources in the southern Songliao Basin are mainly distributed in middle-shallow layers, in which three reservoir assemblages of lower, middle,and upper develop. Conventional oil is widely distributed in the three reservoir assemblages, but tight oil only in the lower assemblage. As for the conventional oil, we set up three types of calibration zones including structure, structurelithology, and lithology, and divide the study area into 13 units based on reservoir types and assemblages, and evaluate the resources mainly with statistics and analogy method. As for the tight oil, we set up one calibration zone and divide the study area into 3 units based on permeability, and evaluate the resources with methods of classified resource abundance analogy and small cell volume. The total amount of oil resource in the southern Songliao Basin is about 32.2 ×10^8 t, including 22.5×10^8 t of conventional oil and 9.7×10^8 t of tight oil. The total amount of remaining oil resources is about 10×10^8 t, including 5.7×10^8 t of conventional oil, which mainly develop in oil layers of Gaotaizi and Saertu,and 9.7×10^8 t of tight oil, which mainly develop in oil layers of Fuyu. The Gaotaizi oil layer in Daqingzijing area and Fuyu oil layer in Qian’an area are the key exploration zones in the near to medium term.

关 键 词：常规油 致密油 资源评价 勘探方向 白垩纪 松辽盆地 

分 类 号：TE155[石油与天然气工程—油气勘探]